Graphical 3D Visualization of Highway Bridge Ratings
نویسندگان
چکیده
Aging highway infrastructure requires effective rating methodologies to prioritize bridges for rehabilitation and repair. To aid engineers in decision making regarding bridge maintenance, a three-dimensional 3D visualization system is developed for rating reinforced concrete deck-girder bridge. Color codings show the most probable mode of failure for girder cross sections under combined moment-shear forces and allow an engineer to determine a rehabilitation strategy. The visualization system relies on 3D finite-element analyses using the open source framework OpenSees, making the system readily extensible to a wide range of bridge types and loading scenarios, as well as emergent reliability-based rating methodologies. Important features of the visualization system are emphasized, including the use of lighting and feature edge detection to improve the visual quality of a bridge model. Recent developments in scientific visualization are discussed for potential application to civil engineering problems. DOI: 10.1061/ ASCE 0887-3801 2009 23:6 355 CE Database subject headings: Bridge management; Maintenance; Computer aided simulation; Graphic methods; Computer programming; Loading rates; Structural analysis; Bridge, highway.
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